git-svn: fix processing of decorated commit hashes
git-svn: fix processing of decorated commit hashes

The function working_head_info() fails to parse commit hashes if they
are decorated (i.e. log.decorate is true), causing dcommit, rebase, and
other vital git-svn commands to malfunction.

This patch disables decorated log output with --no-decorate.

[ew: wrapped long line]

Signed-off-by: Mathias Lafeldt <040cb4e9e85a2ad4d7fdb95c42ca88daea898bc4@debugon.org>
Acked-by: Eric Wong <8c2951295f8292b0c03727bc4652981172298eae@yhbt.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git